21827065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19753}}^1$

素因数の和:19788

約数の個数: 16

約数和(自身を含む): 29868048

約数和(自身を除く): 8040983

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19753, 98765, 256789, 335801, 1283945, 1679005, 4365413, 21827065]

約数ペア:

[(1, 21827065), (5, 4365413), (13, 1679005), (17, 1283945), (65, 335801), (85, 256789), (221, 98765), (1105, 19753)]